Write the general term in the expansion of $(x^2-y)^6$

Question

$\begin{array}{1 1}(A)\;(-1)^r\large\frac{6!}{r!(6-r)!}\normalsize x^{12-2r}y^r\\(B)\;\large\frac{6!}{r!(6-r)!}\\(C)\;\large\frac{6!}{r!(6-r)!}\normalsize x^{12-2r}y^r\\(D)\;\text{None of these}\end{array} $